JP7098256B2 - Liquid ejector - Google Patents

Description

The present disclosure relates to a liquid ejector having a stopper function for restricting the depressing of the depressing head.

Conventionally, as a liquid ejector, for example, one described in Patent Document 1 is known. In such a conventional liquid ejector, the cylinder is fixed in a state where the lower end is hung down inside the container by a base cap attached to the outer periphery of the mouth of the container body, and the cylinder is moved up and down in a state of being urged upward from the opening at the center of the upper end of the base cap. An actuating member provided with a push-down head with a nozzle is provided at the upper end of the stem so as to be movable, and the liquid in the container is sucked up and ejected from the nozzle by moving the actuating member up and down.

Japanese Unexamined Patent Publication No. 2004-262502

In a liquid ejector as described above, a stopper, which is a separate member, is sandwiched between the push-down head and the base cap to regulate the lowering of the push-down head so that the push-down head is not accidentally pushed down and the contents are ejected when not in use. However, it suppresses the ejection of unintended contents by the user. However, when the user uses the contents, the stopper must be removed and stored, and there is room for improvement in terms of handling.

An object of the present disclosure is to solve the above-mentioned problems, and an object of the present invention is to provide a liquid ejector capable of restricting the vertical movement of a push-down head without providing a stopper of a separate member.

The present disclosure has been made in order to solve the above-mentioned problems, and the liquid ejector of the present disclosure has been made.
A mounting cylinder having a top wall with an opening in the center and a side wall hanging from the top wall and mounted on the mouth of the container body.
A stem that protrudes vertically from the opening formed in the top wall of the mounting cylinder while being urged upward.
A push-down head fixed to the upper end of the stem
A liquid ejector capable of sucking up the liquid content of the container body by pressing and returning the push-down head and pouring it out from a nozzle provided on the push-down head.
The push-down head has a peripheral wall extending downward from the pressing portion, and is rotatable around the central axis with respect to the mounting cylinder.
One of the peripheral wall and the mounting cylinder has a guide rib extending in the vertical direction.
The other of the peripheral wall and the mounting cylinder has a guide groove extending in the vertical direction.
When the push-down head is positioned at a predetermined circumferential position with respect to the mounting cylinder, the push-down head can be pushed down by the guide rib being guided in the guide groove.
By lifting the push-down head positioned at the predetermined circumferential position upward by a predetermined distance, the guide rib is released from the guide groove, and the push-down head can rotate and move to a circumferential position where the push-down head cannot be pushed down. It is characterized by.

In the above-described configuration, the liquid ejector of the present disclosure further includes a guide cylinder that surrounds the side wall from the outside in the radial direction and is connected to the lower end portion of the side wall, and the guide groove or the guide rib is the guide rib. It is preferably provided on the guide tube.

According to the present disclosure, it is possible to provide a liquid ejector capable of restricting the vertical movement of the push-down head without providing a stopper of a separate member.

It is a side sectional view which shows the state which attached the liquid ejector which concerns on one Embodiment of this disclosure to a container body, and was able to push down a push-down head. It is an enlarged sectional view of the liquid ejector part in FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. It is a front view seen from the nozzle side of the liquid ejector (push-down possible state) which concerns on one Embodiment of this disclosure. It is a side sectional view (enlarged sectional view) which shows the state in which the liquid ejector which concerns on one Embodiment of this disclosure is attached to a container body, and the pushing-down head cannot be pushed down. FIG. 5 is a cross-sectional view taken along the line BB of FIG. It is a front view seen from the nozzle side of the liquid ejector (state which cannot be pushed down) which concerns on one Embodiment of this disclosure.

Hereinafter, embodiments of the present disclosure will be illustrated in detail with reference to the drawings. As shown in FIG. 1, the liquid ejector 1 according to the present embodiment holds the cylinder 5 in a state where the lower end is hung down in the container body 2 by the mounting cylinder 4 attached to the outer periphery of the mouth portion 3 of the container body 2. At the same time, a push-down head 9 with a nozzle 8 is provided at the upper end of the stem 7 which is urged upward from the opening 6 at the center of the upper end of the mounting cylinder 4 so as to be movable up and down. The liquid ejector 1 can suck up the content liquid in the container body 2 and eject it from the nozzle 8 by pressing and returning the push-down head 9.

In the present specification and claims, the vertical direction means upward and downward in a state where the container body 2 is in an upright posture as shown in FIG. Further, the radial inside means a direction toward the inside (center axis O side) along a straight line perpendicular to the center axis O through the center axis O of the liquid ejector 1 in FIG. 1, and the radial outside means. , It is assumed that it means a direction toward the outside (direction away from the central axis O) along a straight line passing through the central axis O and perpendicular to the central axis O. Further, in the front-rear direction, the direction in which the contents are ejected from the nozzle 8 (left direction in FIG. 1) is the front, and the opposite direction is the rear. In the description described later, it is described that the push-down head 9 is switched between a state in which the push-down head 9 can be pushed down and a state in which the push-down head 9 cannot be pushed down by rotating the push-down head 9 around the central axis O with respect to the fixed container body 2. However, it should be noted that all drawings are drawn with reference to the push-down head 9. Further, the left-right direction of the liquid ejector 1 is a direction perpendicular to the paper surface in FIG.

The mounting cylinder 4 has a top wall 11 having an opening 6 formed in the center, a side wall 12 hanging from the top wall 11 (in this embodiment, hanging from the outer peripheral edge of the top wall 11), and a side wall 12 from the outside in the radial direction. It is surrounded by a guide cylinder 50 integrally provided at the lower end of the side wall 12 via a connecting portion 51. Further, on the inner peripheral surface of the side wall 12, a female screw portion 13 screwed to a male screw portion provided on the outer peripheral surface of the mouth portion 3 is provided.

The cylinder 5 has a cylindrical shape with upper and lower ends open, and as shown in FIG. 2, a flange 14 projecting radially outward is provided on the upper part of the outer peripheral surface, and outside air is introduced into the peripheral wall below the flange 14. The hole 5a is formed. A packing that abuts on the upper end of the mouth portion 3 is provided on the lower surface of the flange 14, and the flange 14 and the packing are sandwiched between the top wall 11 of the mounting cylinder 4 and the upper end of the mouth portion 3. Further, as shown in FIG. 1, the lower end portion of the cylinder 5 is provided with a fitting cylinder portion 16 having a reduced diameter, and the pipe 15 having the upper end fitted in the fitting cylinder portion 16 is inside the container body 2. It hangs down at the lower end. A suction valve 17 is provided at the lower end of the cylinder 5.

The ring cap 10 rotatably fits the guide cylinder 18 penetrating the stem 7 to the inner circumference of the upper end of the cylinder 5 via the vertical rib 19 for preventing rotation, and extends from the center of the guide cylinder 18 in the vertical direction to the outer peripheral side. The fitting cylinder 20 is vertically installed on the flange 18a, and the inner circumference of the fitting cylinder 20 is fitted to the outer periphery of the upper end of the cylinder 5 so as not to be pulled out via the concave-convex engaging means. Further, the outer peripheral cylinder 20a hangs down from the outer peripheral end of the flange 18a to prevent the mounting cylinder 4 from coming out upward. That is, the mounting cylinder 4 is rotatably mounted with respect to the cylinder 5 by restricting its movement in the vertical direction by the flange 14 of the cylinder 5 and the outer peripheral cylinder 20a of the ring cap 10. In the present embodiment, the uneven engagement means is a ridge 21 provided on the outer peripheral surface of the upper end portion of the cylinder 5 in two upper and lower stages, and a groove portion in two upper and lower stages formed on the inner peripheral surface of the corresponding fitting cylinder 20. It is composed.

The push-down head 9 has a vertical cylinder 23 that hangs down from the center of the top wall 22 (pressing portion) and is fitted to the upper end of the stem 7, and a peripheral wall that surrounds the stem 7 from the outside in the radial direction and extends downward from the top wall 22 (pressing portion). It has 60 and a nozzle 8 communicating with the vertical cylinder 23. In the present embodiment, as shown in FIGS. 2 and 3, a guide rib 60a is provided at one position in the circumferential direction of the outer peripheral surface of the peripheral wall 60 so as to project outward in the radial direction and extend in the vertical direction. The guide rib 60a is provided below the nozzle 8 so as to extend from the lower surface of the nozzle 8 to the lower end edge of the peripheral wall 60, but the circumferential position, length, and number of the guide ribs 60a can be appropriately changed. .. For example, the lower end of the guide rib 60a may protrude further below the lower end of the peripheral wall 60, or may extend above the lower end of the peripheral wall 60. Further, by providing three or more guide ribs 60a at equal intervals in the circumferential direction, the posture of the peripheral wall 60 is stabilized when the guide ribs 60a of the peripheral wall 60 are brought into contact with the upper end portion of the guide cylinder 50 shown in FIG. Can be made.

On the other hand, as shown in FIGS. 2 and 3, the inner peripheral surface of the guide cylinder 50 provided in the mounting cylinder 4 is provided with a guide groove 50a that is recessed outward in the radial direction and extends in the vertical direction at one position in the circumferential direction. ing. The guide groove 50a may be provided so as to correspond to the guide rib 60a. In the push-down possible state of the push-down head 9 shown in FIGS. 2 and 3, the lower end of the peripheral wall 60 enters the inner peripheral surface of the guide cylinder 50 (the lower end edge of the peripheral wall 60 is located below the upper end edge of the guide cylinder 50). Further, the guide rib 60a on the peripheral wall 60 side enters the guide groove 50a on the guide cylinder 50 side and is guided. As a result, the rotation of the push-down head 9 with respect to the mounting cylinder 4 in the circumferential direction is restricted.

The stem 7 includes an upper cylinder portion 26 having an open upper and lower ends, an annular protrusion 28 provided at the lower end of the upper cylinder portion 26 and protruding inward in the radial direction, and a lower cylinder portion 29 hanging from the annular protrusion 28. It has a guide cylinder wall portion 30 vertically provided via a skirt portion extending in a tapered shape from the lower end portion of the lower cylinder portion 29 to the outer peripheral side.

A piston member 31 is provided in the vicinity of the guide cylinder wall portion 30 of the stem 7. Specifically, the piston member 31 has a cylindrical seal cylinder 32 that abuts on the inner circumference of the guide cylinder wall portion 30 of the stem 7 in a liquid-tight and slidable manner, and from the lower end of the seal cylinder 32 to the outer peripheral side. It is composed of a skirt-shaped piston 33 that is continuously provided on the outer peripheral edge of the extended flange and whose diameter is expanded upward and downward, and an annular protrusion 34 that is vertically provided at the lower end of the seal cylinder 32. The piston 33 is slidably fitted to the cylinder 5.

A piston guide 35 is fitted to the lower part of the stem 7. The piston guide 35 is provided on a tubular main body portion 35a that fits into the lower tubular portion 29 of the stem 7, a bottom wall portion 37 that extends radially outward from the lower end portion of the main body portion 35a, and an outer peripheral edge of the bottom wall portion 37. It has an outer cylinder portion 38 that is vertically installed. On the outer periphery of the upper end of the outer cylinder portion 38, a plurality of protrusions 39 for forming a gap between the outer circumference of the outer cylinder portion 38 and the inner circumference of the cylinder 5 are provided at intervals in the circumferential direction. Further, the upper surface of the bottom wall portion 37 is configured to be able to come into contact with the lower end of the annular projection 34 of the piston member 31.

A coil spring 40 is arranged between the piston guide 35 and the suction valve 17. The upper end of the coil spring 40 abuts on the lower surface of the bottom wall portion 37 on the inner peripheral side of the outer cylinder portion 38, and urges the stem 7 upward.

Between the stem 7 and the ring cap 10, a closing cylinder member 41 that closes the outside air introduction hole 5a when the pushing down head 9 is pushed down is provided. The closing cylinder member 41 has a sliding closing portion 42 that can be slidably fitted to the upper portion of the cylinder 5 to close the outside air introduction hole 5a, and the sliding closing portion 42 is peripherally peripheral to the lower portion (lower end in this example). It is composed of a protruding base cylinder portion 43. When the push-down head 9 shifts to the lowest lowered state, the closing cylinder member 41 is pushed down by the downward step portion 44 provided in the vertical cylinder 23 of the push-down head 9 to close the outside air introduction hole 5a.

In order to use the contents in the container body 2 by using the liquid ejector 1 having the above configuration, the user can push down from the pushable state shown in FIGS. 1 to 3 to the top wall 22 (pressing portion) of the push down head 9. Press down and push down. Then, the outer peripheral surface of the peripheral wall 60 is guided by the inner peripheral surface of the guide cylinder 50, and moves downward along the guide cylinder 50. At this time, the guide rib 60a is also guided in the guide groove 50a and moves downward along the guide groove 50a. As a result, the stem 7, which will be described later, is pushed down by the push-down head 9, and the contents accumulated in the cylinder 5 are pumped upward through the inside of the stem 7, so that the contents in the container body 2 are pushed upward from the nozzle 8. It can be spouted.

Whether or not the push-down head 9 is in the push-down possible position by matching the circumferential positions of the guide rib 60a and the guide groove 50a is whether or not the circumferential positions of the alignment marks 62 and 52 shown in FIG. 4 match. Can be judged by. An alignment mark 62 is provided on the outer peripheral surface of the peripheral wall 60 at the same circumferential position as the circumferential position of the guide rib 60a. Further, on the outer peripheral surface of the guide cylinder 50, an alignment mark 52 is provided at the same circumferential position as the circumferential position of the guide groove 50a. Therefore, the user can visually confirm that the liquid ejector 1 is in a pushable-down state by confirming that the alignment marks 62 and 52 are in the same circumferential position as shown in FIG. ..

Next, when the use of the contents is completed, the user moves the push-down head 9 in the circumferential direction as shown in FIGS. 5 to 7 in order to prevent the contents from being unintentionally ejected, and causes the push-down head 9 to move. It is in a state where it cannot be pushed down. Next, a method of moving the push-down head 9 in the circumferential direction will be described.

As shown in FIG. 2, in a state where the push-down head 9 can be pushed down but not yet pushed down, that is, at the initial position of the push-down head, the closing cylinder member 41 is pushed up by, for example, the piston 33 and the sliding closing portion 42 is pushed up to death. Located at a point, a gap G of a predetermined distance in the vertical direction is provided between the closing cylinder member 41 and the guide cylinder wall portion 30 of the stem 7. Then, by pushing down the head 9 by the gap G from the state of FIG. 2, the lower end of the guide rib 60a of the peripheral wall 60 can be pulled up above the guide groove 50a of the guide cylinder 50. As a result, the circumferential position of the guide rib 60a of the peripheral wall 60 is no longer constrained by the guide groove 50a of the guide cylinder 50. Therefore, the user can lift the push-down head 9 by the gap G and then rotate it in the circumferential direction.

5 and 6 show a state in which the push-down head 9 is lifted by the gap G from the states of FIGS. 2 and 3 and then rotated by a predetermined angle in the circumferential direction. As shown in FIG. 6, since the push-down head 9 is rotated to a position where the circumferential positions of the guide rib 60a and the guide groove 50a do not overlap at all, the lower end surface of the guide rib 60a is above the guide cylinder 50 without the guide groove 50a. It abuts on the end face and the push-down head 9 cannot be pushed down. Therefore, by keeping the state shown in FIGS. 5 and 6, it is possible to prevent the user from unintentionally pushing down the push-down head 9 and ejecting the contents from the nozzle 8.

When the liquid ejector 1 is in the state shown in FIGS. 5 and 6, the circumferential positions of the guide ribs 60a and the guide grooves 50a are separated by a predetermined angle, so that the circumferential positions of the alignment marks 62 and 52 are also shown in the figure. As shown in No. 7, they are separated by a predetermined angle. By visually recognizing the alignment marks 62 and 52, the user can recognize that the push-down head 9 of the liquid ejector 1 is in a state in which the push-down head 9 cannot be pushed down.

Then, when the push-down head 9 is pushed down again to use the contents, the user pushes the push-down head 9 with respect to the guide cylinder 50 so that the circumferential positions of the alignment marks 62 and 52 match from the state of FIG. Relative rotation. As a result, the guide rib 60a can move along the guide groove 50a, so that the push-down head 9 can be pushed down again to eject the contents.

As described above, the present embodiment includes a top wall 11 having an opening in the center and a side wall 12 hanging from the top wall 11, and a mounting cylinder 4 mounted on the mouth portion 3 of the container body 2 and a mounting cylinder. A stem 7 that protrudes vertically and vertically above the opening 6 formed in the top wall 11 of 4 and a push-down head 9 fixed to the upper end of the stem 7 are provided, and the push-down head 9 is pressed and returned. The liquid ejector 1 is capable of sucking up the content liquid of the container body 2 and pouring it out from the nozzle 8 provided in the push-down head 9, and the push-down head 9 is a peripheral wall extending downward from the pressing portion (top wall 22). It has 60 and is rotatable around the central axis O with respect to the mounting cylinder 4, the peripheral wall 60 has a guide rib 60a extending in the vertical direction, and the mounting cylinder 4 has a guide groove 50a extending in the vertical direction. When the push-down head 9 is positioned at a predetermined circumferential position with respect to the mounting cylinder 4, the guide rib 60a is guided in the guide groove 50a, so that the push-down head 9 can be pushed down and positioned at a predetermined circumferential position. By lifting the pushed-down head 9 upward by a predetermined distance (gap G), the guide rib 60a is released from the guide groove 50a, and the pushing-down head 9 is configured to be rotatable and movable to a circumferential position where the pushing-down head 9 cannot be pushed down. By adopting such a configuration, the push-down head 9 can be switched between the push-down possible state and the push-down non-pushable state by rotating the push-down head 9 relative to the mounting cylinder 4, so that a stopper of a separate member is not provided. It is possible to regulate the vertical movement of the push-down head when not in use.

Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these modifications and modifications are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined or divided into one. It should be understood that these are also included in the scope of the present invention.

For example, the pump mechanism inside the cylinder that sucks up the contents may adopt other known structures.

Further, in the present embodiment, the mounting cylinder 4 is configured to include the guide cylinder 50, but the present invention is not limited to this embodiment, and the mounting cylinder 4 may not be provided with the guide cylinder 50. When the guide cylinder 50 is not provided on the mounting cylinder 4, for example, a guide groove or a guide rib may be provided on the outer peripheral surface of the side wall 12 so that the guide rib or the guide groove provided on the inner peripheral surface of the peripheral wall 60 is guided. good.

Further, in the present embodiment, the guide rib 60a is provided on the peripheral wall 60 of the push-down head 9, and the guide groove 50a is provided on the guide cylinder 50 of the mounting cylinder 4, but the present invention is not limited to this embodiment. A guide groove may be provided in the peripheral wall 60 of the push-down head 9, and a guide rib may be provided in the guide cylinder 50 of the mounting cylinder 4.

Further, in the present embodiment, the peripheral wall 60 of the push-down head 9 is configured to be guided along the inner peripheral surface of the guide cylinder 50 of the mounting cylinder 4, but the present invention is not limited to this embodiment. The guide cylinder 50 may be configured to be guided along the inner peripheral surface of the peripheral wall 60. In this case, for example, a guide groove or a guide rib may be provided on the inner peripheral surface of the peripheral wall 60, and a guide rib or a guide groove may be provided on the outer peripheral surface of the guide cylinder 50. Further, the peripheral wall 60 of the push-down head 9 does not have to be guided by the guide cylinder 50 of the mounting cylinder 4.

1 Liquid ejector 2 Container body 3 Mouth 4 Mounting cylinder 5 Cylinder 5a Outside air introduction hole 6 Opening 7 Stem 8 Nozzle 9 Push-down head 10 Ring cap 11 Top wall 12 Side wall 13 Female threaded part 14 Flange 15 Pipe 16 Fitting cylinder part 17 Suction Valve 18 Guide cylinder 18a Flange 19 Vertical rib 20 Fitting cylinder 20a Outer cylinder 21 Protrusion 22 Top wall (pressing part)
23 Vertical cylinder 26 Upper cylinder part 28 Circular protrusion 29 Lower cylinder part 30 Guide cylinder wall part 31 Piston member 32 Seal cylinder 33 Piston 34 Circular protrusion 35 Piston guide 35a Main body part 37 Bottom wall part 38 Outer cylinder part 39 Protrusion 40 Coil spring 41 Closure cylinder member 42 Sliding obstruction part 43 Base cylinder part 44 Downward step part 50 Guide cylinder 50a Guide groove 51 Connecting part 52 Alignment mark 60 Peripheral wall 60a Guide rib 62 Alignment mark G Gap (predetermined distance)
O center axis

Claims (2)

A mounting cylinder having a top wall with an opening in the center and a side wall hanging from the top wall and mounted on the mouth of the container body.
A stem that protrudes vertically from the opening formed in the top wall of the mounting cylinder while being urged upward.
A push-down head fixed to the upper end of the stem
A liquid ejector capable of sucking up the liquid content of the container body by pressing and returning the push-down head and pouring it out from a nozzle provided on the push-down head.
The push-down head has a peripheral wall extending downward from the pressing portion, and is rotatable around the central axis with respect to the mounting cylinder.
One of the peripheral wall and the mounting cylinder has a guide rib extending in the vertical direction.
The other of the peripheral wall and the mounting cylinder has a guide groove extending in the vertical direction.
When the push-down head is positioned at a predetermined circumferential position with respect to the mounting cylinder, the push-down head can be pushed down by the guide rib being guided in the guide groove.
By lifting the push-down head positioned at the predetermined circumferential position upward by a predetermined distance, the guide rib is released from the guide groove, and the push-down head can rotate and move to a circumferential position where the push-down head cannot be pushed down. A liquid ejector featuring. The mounting cylinder surrounds the side wall from the outside in the radial direction, further includes a guide cylinder connected to the lower end portion of the side wall, and the guide groove or the guide rib is provided in the guide cylinder according to claim 1. The liquid ejector described.

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